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nvme-fcloop: Fix dropped LS's to removed target port 

When a targetport is removed from the config, fcloop will avoid calling
the LS done() routine thinking the targetport is gone. This leaves the
initiator reset/reconnect hanging as it waits for a status on the
Create_Association LS for the reconnect.

Change the filter in the LS callback path. If tport null (set when
failed validation before "sending to remote port"), be sure to call
done. This was the main bug. But, continue the logic that only calls
done if tport was set but there is no remoteport (e.g. case where
remoteport has been removed, thus host doesn't expect a completion).

Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
zero-colors
James Smart 2018-08-09 16:00:14 -07:00 committed by Christoph Hellwig
parent f1ed3df20d
commit afd299ca99
1 changed files with 2 additions and 1 deletions
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3
drivers/nvme/target/fcloop.c
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@ -311,7 +311,7 @@ fcloop_tgt_lsrqst_done_work(struct work_struct *work)
struct fcloop_tport *tport = tls_req->tport;
struct nvmefc_ls_req *lsreq = tls_req->lsreq;
if (tport->remoteport)
if (!tport || tport->remoteport)
lsreq->done(lsreq, tls_req->status);
}
@ -329,6 +329,7 @@ fcloop_ls_req(struct nvme_fc_local_port *localport,
if (!rport->targetport) {
tls_req->status = -ECONNREFUSED;
tls_req->tport = NULL;
schedule_work(&tls_req->work);
return ret;
}